Abstract: Through analyzing the distribution laws of the foundation stress under the eccentric load, the calculation method of eccentric load influence depth is established, and the additional stress distribution law under the loading area is summarized under the eccentric load. The study shows that the influence depth calculation under the eccentric load is closely related with the fissure depth H_lsof the surface building. When the evaluation is made for the foundation stability under the eccentric load, it should be calculated differently according to the fissure depth H_ls.